正宁县山河镇地质灾害地质灾害危险性评价

Risk assessment of geological hazard in shanhe town,zhengning county

正宁县山河镇地处鄂尔多斯盆地西南缘,其地貌类型属陇东黄土高原,处于陇东黄土高原的西南部。受地形地貌及地层岩性控制的滑坡、崩塌、不稳定斜坡等不良地质现象较发育。分析评价在降雨、地震、人类工程活动等条件下,某一个或一个以上的可调节的地质环境因素的变化,导致灾体处于不稳定状态,预测评估地质灾害的范围、危险性。

Shanhe town of zhengning county is located in the southwest margin of ordos basin,and its landform is longdong loess plateau,which is located in the southwest of longdong loess plateau.The bad geological phenomena,such as landslide,collapse and unstable slope,are developed.To analyze and evaluate the changes of one or more adjustable geological environment factors under the conditions of rainfall,earthquake and human engineering activities,resulting in the unstable state of the disaster-causing body,and to predict and evaluate the scope and risk of geological disasters.